import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'
Vue.use(VueRouter)

const routes = [{
  path: "/",
  redirect: "/login"
}, {
  path: "/login",
  component: Login
}, {
  path: "/home",
  component: Home,
  redirect: "/welcome",
  children: [{
    path: "/welcome",
    component: Welcome
  }, {
    path: "/users",
    component: Users
  },{
    path: "/rights",
    component: Rights
  },{
    path: "/roles",
    component: Roles
  },{
    path: "/categories",
    component: Cate
  },{
    path: "/params",
    component: Params
  },{
    path: "/goods",
    component: List
  },{
    path: "/goods/add",
    component: Add
  },{
    path: "/orders",
    component: Order
  },{
    path: "/reports",
    component: Report
  }]
}]

const router = new VueRouter({
  routes
})

// 挂在路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 是一个函数，表示放行
  // next() 放行  next("/login") 强制跳转
  if (to.path === "/login") return next()
  //获取 token 
  const tokenStr = window.sessionStorage.getItem("token")
  if (!tokenStr) return next("/login")
  next()
})

export default router